题目内容

It was not until then that I came to know that knowledge _______ only from practice.?
A．had comeB．has come
C．cameD．comes?
D?
主句虽然是过去时态，但从句所说明的是不受时间限制的真理或事实，名词性从句的谓语动词仍然用一般现在时。又如:He said Asia is the largest continent.
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C．left;has worked?
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A．solvingB．being solvedC．having solvedD．solved
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—— Really ? Where ＿＿＿＿＿ ?
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Those who failwill giveanother chance to take the exam.
A    B      C               D

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